Muscular system flashcards

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describe the muscular system? it is the system in humans that produces movement
how is the muscular system controlled? it is controlled through the nervous system
where is muscle derived from? muscle is derived from the mesodermal layer of the embryonic germ cell
what is the function of muscle tissue? its function is to provide force and cause motion
what is the myofibrils composed of? myofibrils are composed of actin and myosin
what are sarcomeres? it is the smallest contractile unit of a muscle
Can the number of muscle fibers be increased through exercise? no, contrary to popular belief
what are the three basic types of muscles? smooth, cardiac and skeletal muscle
How do muscle fibers work? use actin sliding against myosin to create muscle contraction and relaxation
what are the three components of skeletal muscle fibers? sarcolemma, transverse tubles, sarcoplasm
what are some characteristics of multi-unit smooth muscles? the contraction and relaxation are slower than skeletal muscles
what are the three major types of cardiac cells? contractile, conductile, pacemaker
what is the location and function of the contractile cardiac cells? they are found in the ventricles and atria of the heart. Their help in cardiac contraction
what is the location and function of the conductile cardiac cells? they are found in the purkinje Fibers. Their function is the rapid spread of electrcal signal
what is the location and function of the pacemaker cells? They are found in the SA and AV nodes. Their function is the pacemaker activity

describe the muscular system?

how is the muscular system controlled?

where is muscle derived from?

what is the function of muscle tissue?

what is the myofibrils composed of?

what are sarcomeres?

Can the number of muscle fibers be increased through exercise?

what are the three basic types of muscles?

How do muscle fibers work?

what are the three components of skeletal muscle fibers?

what are some characteristics of multi-unit smooth muscles?

what are the three major types of cardiac cells?

what is the location and function of the contractile cardiac cells?

what is the location and function of the conductile cardiac cells?

what is the location and function of the pacemaker cells?

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